Open Biomedical Engineering Journal最新文献_第9页

Introduction and testing of an alternative control approach for a robotic prosthetic arm. 机器人义肢替代控制方法的介绍和测试。

Open Biomedical Engineering Journal Pub Date : 2014-10-30 eCollection Date: 2014-01-01 DOI: 10.2174/1874120701408010093

Lauren Griggs, Farbod Fahimi

引用次数: 4

Foot modeling and smart plantar pressure reconstruction from three sensors. 足部建模和智能足底压力重建从三个传感器。

Open Biomedical Engineering Journal Pub Date : 2014-10-30 eCollection Date: 2014-01-01 DOI: 10.2174/1874120701408010084

Hussein Abou Ghaida, Serge Mottet, Jean-Marc Goujon

引用次数: 6

Injury risk assessment of non-lethal projectile head impacts. 非致命弹丸头部撞击损伤风险评估。

Open Biomedical Engineering Journal Pub Date : 2014-10-30 eCollection Date: 2014-01-01 DOI: 10.2174/1874120701408010075

Amar Oukara, Nestor Nsiampa, Cyril Robbe, Alexandre Papy

{"title":"Injury risk assessment of non-lethal projectile head impacts.","authors":"Amar Oukara, Nestor Nsiampa, Cyril Robbe, Alexandre Papy","doi":"10.2174/1874120701408010075","DOIUrl":"https://doi.org/10.2174/1874120701408010075","url":null,"abstract":"Kinetic energy non-lethal projectiles are used to impart sufficient effect onto a person in order to deter uncivil or hazardous behavior with a low probability of permanent injury. Since their first use, real cases indicate that the injuries inflicted by such projectiles may be irreversible and sometimes lead to death, especially for the head impacts. Given the high velocities and the low masses involved in such impacts, the assessment approaches proposed in automotive crash tests and sports may not be appropriate. Therefore, there is a need of a specific approach to assess the lethality of these projectiles. In this framework, some recent research data referred in this article as \"force wall approach\" suggest the use of three lesional thresholds (unconsciousness, meningeal damages and bone damages) that depend on the intracranial pressure. Three corresponding critical impact forces are determined for a reference projectile. Based on the principle that equal rigid wall maximal impact forces will produce equal damage on the head, these limits can be determined for any other projectile. In order to validate the consistence of this innovative method, it is necessary to compare the results with other existing assessment methods. This paper proposes a comparison between the \"force wall approach\" and two different head models. The first one is a numerical model (Strasbourg University Finite Element Head Model-SUFEHM) from Strasbourg University; the second one is a mechanical surrogate (Ballistics Load Sensing Headform-BLSH) from Biokinetics. ","PeriodicalId":39121,"journal":{"name":"Open Biomedical Engineering Journal","volume":"8 ","pages":"75-83"},"PeriodicalIF":0.0,"publicationDate":"2014-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/a8/b6/TOBEJ-8-75.PMC4231376.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32818380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Effect of ligation method on maxillary arch force/moment systems for a simulated lingual incisor malalignment. 结扎方法对模拟舌切牙对中上颌弓力/力矩系统的影响。

Open Biomedical Engineering Journal Pub Date : 2014-10-30 eCollection Date: 2014-01-01 DOI: 10.2174/1874120701408010106

Surbhi Seru, Dan L Romanyk, Roger W Toogood, Jason P Carey, Paul W Major

{"title":"Effect of ligation method on maxillary arch force/moment systems for a simulated lingual incisor malalignment.","authors":"Surbhi Seru, Dan L Romanyk, Roger W Toogood, Jason P Carey, Paul W Major","doi":"10.2174/1874120701408010106","DOIUrl":"https://doi.org/10.2174/1874120701408010106","url":null,"abstract":"Introduction: The objectives of this study were to determine whether there is a difference in the magnitude of forces and moments produced by elastic ligation when compared to passive ligation, and whether these forces and moments propagate differently along the arch for the two ligation types. A lingual incisor malalignment was used in this study.Methods: The Orthodontic Simulator (OSIM) was used to quantify the three-dimensional forces and moments applied on the teeth given a lingually displaced incisor. A repeated measures MANOVA was performed to statistically analyze the data.Results: The interaction factor illustrated convincing evidence that there is a difference in maximum force and moment values for all outcome variables between ligation types considering all tooth positions along the arch. The mean differences for FX and FY between ligation types were found to be clinically significant, with values for elastic ligation consistently higher than passive ligation.Conclusion: It was found that the maximum forces and moments produced by elastic ligation are greater than those produced by passive ligation and that the magnitude of this difference for the mesiodistal and buccolingual forces is clinically relevant. Additionally, it was determined that elastic ligation causes forces and moments to propagate further along the arch than passive ligation for all outcome variables.","PeriodicalId":39121,"journal":{"name":"Open Biomedical Engineering Journal","volume":"8 ","pages":"106-13"},"PeriodicalIF":0.0,"publicationDate":"2014-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/ae/c1/TOBEJ-8-106.PMC4231375.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32816736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Collaborative case-based reasoning for knowledge discovery of elders health assessment system. 基于协同案例推理的老年人健康评估系统知识发现。

Open Biomedical Engineering Journal Pub Date : 2014-09-29 eCollection Date: 2014-01-01 DOI: 10.2174/1874120701408010068

Ping Hu, Dong-Xiao Gu, Yu Zhu

引用次数: 6

Quality metrics of spike sorting using neighborhood components analysis. 使用邻域成分分析的尖峰分类的质量度量。

Open Biomedical Engineering Journal Pub Date : 2014-09-17 eCollection Date: 2014-01-01 DOI: 10.2174/1874120701408010060

Xinyu Liu, Hong Wan, Li Shi

引用次数: 6

An Injectable Complex of β-tricalcium Phosphate Granules, Hyaluronate, and rhFGF-2 on Repair of Long-bone Fractures with Large Fragments. 可注射的β-磷酸三钙颗粒、透明质酸和rhFGF-2复合物对大碎片长骨骨折的修复作用。

Open Biomedical Engineering Journal Pub Date : 2014-09-03 eCollection Date: 2014-01-01 DOI: 10.2174/1874120701408010052

T Tanaka, Y Kumagae, M Chazono, H Komaki, S Kitasato, A Kakuta, K Marumo

{"title":"An Injectable Complex of β-tricalcium Phosphate Granules, Hyaluronate, and rhFGF-2 on Repair of Long-bone Fractures with Large Fragments.","authors":"T Tanaka, Y Kumagae, M Chazono, H Komaki, S Kitasato, A Kakuta, K Marumo","doi":"10.2174/1874120701408010052","DOIUrl":"https://doi.org/10.2174/1874120701408010052","url":null,"abstract":"We evaluated the effects of an injectable complex of β-tricalcium phosphate (β-TCP) granules, hyaluronate, and recombinant human fibroblast growth factor-2 (rhFGF-2) on repair of unstable intertrochanteric fractures in elderly patients. Twenty-five patients (range, 76-91 years) having 31.A2 fractures (AO classification) were treated with injection of the complex followed by intramedullary nails. Bone regeneration and β-TCP resorption, unions of intertrochanteric fractures and displaced lesser trochanters to the shaft, and varus deformity of the femoral neck were assessed by X-ray and CT scans. Fracture union occurred in all cases and union of the displaced lesser trochanter to the shaft was obtained in 24 cases by 12 weeks. It is of interest that β-TCP granules were completely resorbed and marked new bone formation around the lesser trochanter was observed in all cases compared to cases not treated with the complex. Based on the results of intertrochanteric fractures, we applied this technique to two patients with subtrochanteric or humeral fractures in elderly patients, and obtained bone union. This complex is a paste-like material that is easy to handle, and it may be of considerable use in treatment of both unstable intertrochanteric fractures and other cortical bone defects with minimal surgical invasion. ","PeriodicalId":39121,"journal":{"name":"Open Biomedical Engineering Journal","volume":"8 ","pages":"52-9"},"PeriodicalIF":0.0,"publicationDate":"2014-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4157360/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32689651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Abnormal repolarization in the acute myocardial infarction patients: a frequency-based characterization. 急性心肌梗死患者的异常复极:一种基于频率的特征。

Open Biomedical Engineering Journal Pub Date : 2014-07-11 eCollection Date: 2014-01-01 DOI: 10.2174/1874120701408010042

Corrado Giuliani, Angela Agostinelli, Sandro Fioretti, Francesco D Nardo, Laura B Burattini

{"title":"Abnormal repolarization in the acute myocardial infarction patients: a frequency-based characterization.","authors":"Corrado Giuliani, Angela Agostinelli, Sandro Fioretti, Francesco D Nardo, Laura B Burattini","doi":"10.2174/1874120701408010042","DOIUrl":"https://doi.org/10.2174/1874120701408010042","url":null,"abstract":"Despite ST elevation having poor sensitivity for acute myocardial infarction (AMI), it remains the main electrocardiographic (ECG) repolarization index for AMI diagnosis. Aim of the present study was to propose a new f99 index, defined as the frequency at which the repolarization normalized cumulative energy reaches 99%, for ECG AMI discrimination from health with good sensitivity and good specificity. Evaluation of such f99 index was performed on 12-standard-lead (I, II, III, aV1, aVr, aVf, V1 to V6) ECG recordings of 47 healthy controls and 108 acute myocardial infarction (AMI) patients. Repolarization dispersion caused f99 distributions to be significantly lead dependent. In most leads (leads I, II, aVl, aVr, V2-V6), f99 median value was lower in the healthy controls (10-17 Hz) than in the AMI patients (12-38 Hz) indicating higher frequency components (i.e. a more fragmented repolarization) in the latter population. AMI patients from healthy controls discrimination by f99, evaluated in terms of sensitivity (Se) and specificity (Sp), was also lead dependent. Single-lead analysis indicated leads I (Se=80%, Sp=77%) and aVl (Se=84%, Sp=74%) as optimal. Instead, lead-system analysis, performed to overcome dispersion issues, provided the best results when averaging over the 6 precordial leads (Se= 81% and Sp=74%). In conclusion, our new f99 index appears as a promising tool for non-invasively and reliably discriminate AMI patients from healthy subjects. ","PeriodicalId":39121,"journal":{"name":"Open Biomedical Engineering Journal","volume":"8 ","pages":"42-51"},"PeriodicalIF":0.0,"publicationDate":"2014-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/b8/53/TOBEJ-8-42.PMC4126187.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32574342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Variability in EIT Images of Lung Ventilation as a Function of Electrode Planes and Body Positions. 肺通气 EIT 图像的变异性与电极平面和身体位置的关系

Open Biomedical Engineering Journal Pub Date : 2014-06-27 eCollection Date: 2014-01-01 DOI: 10.2174/1874120701408010035

Jie Zhang, Robert Patterson

{"title":"Variability in EIT Images of Lung Ventilation as a Function of Electrode Planes and Body Positions.","authors":"Jie Zhang, Robert Patterson","doi":"10.2174/1874120701408010035","DOIUrl":"10.2174/1874120701408010035","url":null,"abstract":"This study is aimed at investigating the variability in resistivity changes in the lung region as a function of air volume, electrode plane and body position. Six normal subjects (33.8 ± 4.7 years, range from 26 to 37 years) were studied using the Sheffield Electrical Impedance Tomography (EIT) portable system. Three transverse planes at the level of second intercostal space, the level of the xiphisternal joint, and midway between upper and lower locations were chosen for measurements. For each plane, sixteen electrodes were uniformly positioned around the thorax. Data were collected with the breath held at end expiration and after inspiring 0.5, 1.0, or 1.5 liters of air from end expiration, with the subject in both the supine and sitting position. The average resistivity change in five regions, two 8x8 pixel local regions in the right lung, entire right, entire left and total lung regions, were calculated. The results show the resistivity change averaged over electrode positions and subject positions was 7-9% per liter of air, with a slightly larger resistivity change of 10 % per liter air in the lower electrode plane. There was no significant difference (p>0.05) between supine and sitting. The two 8x8 regions show a larger inter individual variability (coefficient of variation, CV, is from 30% to 382%) compared to the entire left, entire right and total lung (CV is from 11% to 51%). The results for the global regions are more consistent. The large inter individual variability appears to be a problem for clinical applications of EIT, such as regional ventilation. The variability may be mitigated by choosing appropriate electrode plane, body position and region of interest for the analysis. ","PeriodicalId":39121,"journal":{"name":"Open Biomedical Engineering Journal","volume":"8 ","pages":"35-41"},"PeriodicalIF":0.0,"publicationDate":"2014-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/7d/85/TOBEJ-8-35.PMC4126188.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32574341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Biomechanical Effect of Loading Speed on Metal-on-UHMWPE Contact Mechanics. 加载速度对金属-超高分子量聚乙烯接触力学的生物力学影响。

Open Biomedical Engineering Journal Pub Date : 2014-05-16 eCollection Date: 2014-01-01 DOI: 10.2174/1874120701408010028

Radovan Zdero, Zahra S Bagheri, Mojtaba Rezaey, Emil H Schemitsch, Habiba Bougherara

{"title":"The Biomechanical Effect of Loading Speed on Metal-on-UHMWPE Contact Mechanics.","authors":"Radovan Zdero, Zahra S Bagheri, Mojtaba Rezaey, Emil H Schemitsch, Habiba Bougherara","doi":"10.2174/1874120701408010028","DOIUrl":"https://doi.org/10.2174/1874120701408010028","url":null,"abstract":"Ultra high molecular weight polyethylene (UHMWPE) is a material commonly used in total hip and knee joint replacements. Numerous studies have assessed the effect of its viscoelastic properties on phenomena such as creep, stress relaxation, and tensile stress. However, these investigations either use the complex 3D geometries of total hip and knee replacements or UHMWPE test objects on their own. No studies have directly measured the effect of vertical load application speed on the contact mechanics of a metal sphere indenting UHMWPE. To this end, a metal ball was used to apply vertical force to a series of UHMWPE flat plate specimens over a wide range of loading speeds, namely, 1, 20, 40, 60, 80, 100, and 120 mm/min. Pressure sensitive Fujifilm was placed at the interface to measure contact area. Experimental results showed that maximum contact force ranged from 3596 to 4520 N and was logarithmically related (R(2)=0.96) to loading speed. Average contact area ranged from 76.5 to 79.9 mm(2) and was linearly related (R(2)=0.56) to loading speed. Average contact stress ranged from 45.1 to 58.2 MPa and was logarithmically related (R(2)=0.95) to loading speed. All UHMWPE specimens displayed a circular area of permanent surface damage, which did not disappear with time. This study has practical implications for understanding the contact mechanics of hip and knee replacements for a variety of activities of daily living. ","PeriodicalId":39121,"journal":{"name":"Open Biomedical Engineering Journal","volume":"8 ","pages":"28-34"},"PeriodicalIF":0.0,"publicationDate":"2014-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2174/1874120701408010028","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32392801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7